All Over Color
To paint all of the cabinetry, remove all hardware first and use a paintbrush. Pick a color that creates color harmony in the kitchen, using either another shade of the wall color or a color that complements the wall color. If your walls are blue, for example, paint the cabinets a lighter or darker shade of blue or use a complementary color such as orange.
Painting Doors Only
One creative option involves painting only the cabinet doors. Completely remove the cabinet doors and the door pulls, then spray paint the doors a bold or contrasting color to the rest of the cabinetry. "Happy News" states that white cabinets with black spray-painted doors can create a nice effect in a previously-dull kitchen.
If you want to go the extra mile, paint the cabinets one all-over color first, allowing them to dry completely for a day or two. Then, stencil designs onto the front of the cabinets. Purchase stencils at craft stores or home improvement stores. For the best result, stencil cabinets with the same design throughout.
"This Old House" suggests trying a faux finish if you want to add even more flair to your kitchen cabinets. Faux finishing techniques involve using special paints such as crackling paint or tools such as sponges to create unique finishes.